FREQUENCY |
All waveforms are available up to 10MHz. However, the purity of triangle, ramp, and multi-level squarewave waveforms is not specified above the frequencies indicated in the following section. |
Range |
0.1mHz to 10MHz |
Resolution |
7 digits or 0.1mHZ |
Accuracy |
Typically <±10ppm for 1 year, 18°C to 28°C |
Tempco. |
Typically <1ppm/oC outside of 18°C to 28°C |
WAVEFORMS |
Sinewave |
Distortion |
<0.3% to 500kHz, -60dBc to 20kHz, <-50dBc to 1MHz, <-35dBc to 10MHz (typically -40dBc) |
Spurii |
Non harmonically related spurii typically <-65dBc to 1MHz, <-65dBc +6dB/Octave above 1MHz |
Squarewave |
Rise & Fall Times |
<22ns |
Triangle |
Linearity error: |
<0.5% to 30kHz |
Positive and Negative Ramp |
Linearity error: |
<0.5% to 30kHz |
Positive and Negative Pulse |
Rise & Fall Times: |
<22ns |
Multi-Level Squarewave Up to 16 steps available per cycle, each step selectable for amplitude (10 bit resolution) and duration (1 to 1024 samples). Above 27kHz a 36ns edge uncertainty is introduced. |
Rise & Fall Times: |
<22ns |
Arbitrary (and Complex) A number of “complex” waveforms are preprogrammed in ROM . A further 5, user defined, waveforms may be loaded via the digital interfaces and stored in non-volatile RAM. |
Frequency range: |
All waveform points can be continuously output up to 27kHz, beyond which they are sampled |
No. of Samples: |
1024 10 bit samples |
Noise Wideband white noise with variable amplitude and offset. Typical 3dB bandwidth 0.03Hz to 700kHz. |
SYMMETRY |
Range: |
Sine,Triangle, Ramp - 1% to 99% at all frequencies; Other waveforms - 1% to 99% to 30kHz, 20% to 80% to 10MHz |
Resolution: |
0.1% |
MAIN OUTPUT |
Output Impedance: |
50Ω or 600Ω switchable |
Amplitude: |
5mV to 20V pk-pk open circuit (2.5mV to 10V into 50Ω/600Ω). |
Output can be specified as V-HiZ (open circuit value) or V (potential difference) in pk-pk, RMS or dBm. Note that in positive or negative Pulse modes the amplitude range is 2.5mV to 10V pk-pk O/C. |
Accuracy: |
±3% ±1mV at 1kHz into 50Ω/600Ω |
Flatness: |
±0.2dB to 500kHz; ±1dB to 10MHz |
Pulse Aberrations: |
<5% + 2mV |
DC Offset: |
±10V from 50Ω/600Ω. DC offset plus signal peak limited to ±10V from 50Ω/600Ω |
Resolution: |
3 digits for both amplitude and offset |
MODULATION MODES |
Trigger/Burst Phase coherent signal keying - each positive edge of the Trigger signal will produce one burst of the carrier, starting and stopping at the phase angle specified by the Start/Stop phase setting. |
Carrier frequency: |
0.1mHz to 10MHz |
Carrier waveforms: |
1 to 1023 (resolution 1 cycle) or 0.5 to 511.5 (resolution ½ cycle) |
Trigger rep. rate: |
dc to 50kHz internal, dc to 1MHz external |
Source: |
Internal from keyboard or trigger generator. External from EXT TRIG input or remote interface |
Gated Non phase-coherent signal keying - output is On while Gate signal is high and Off while low. |
Carrier frequency: |
From 0.1mHz to 10MHz |
Carrier waveforms: |
All |
Trigger rep. rate: |
dc to 50kHz internal dc to 1MHz external |
Gate source: |
Internal from keyboard or trigger generator. External from EXT TRIG input or remote interface |
Sweep |
Carrier waveforms: |
All |
Sweep Mode: |
Linear or logarithmic, single or continuous |
Sweep Width: |
0.1mHz to 10MHz. Phase continuous. Independent setting of the start and stop frequency. |
Sweep Time: |
10ms to 999s (3 digit resolution) |
Markers: |
Two markers variable during sweep. Available at the TRIG/SWEEP OUT socket |
Sweep Trigger source: |
The sweep may be free run or triggered from: keyboard, EXT TRIG input, remote interface |
Amplitude Modulation |
Carrier frequency: |
0.1mHz to 10MHz |
Carrier waveforms: |
All |
Depth: |
0 to 100% typical, resolution 1%. |
Internal source: |
1kHz fixed sinewave or 0.005Hz to 50kHz square wave |
External: |
See “VCA In” section |
Frequency Shift Keying (FSK) Phase coherent switching between two frequencies at a rate defined by the switching signal source. |
Carrier frequency: |
0.1mHz to 10MHz |
Carrier waveforms: |
All |
Switch repetition rate: |
dc to 50kHz internal, dc to 1MHz external |
Switching signal source: |
Internal from keyboard or trigger generator. External from EXT TRIG input or remote interface |
Hop Up to 16 different “hop” waveforms can be defined in terms of function, frequency, amplitude, offset and duration. Duration setable per step 1ms to 60s. |
Start/Stop Phase |
Carrier frequency: |
0.1mHz to 10MHz |
Carrier waveforms: |
All |
Range: |
-360 to +360 degrees |
Resolution: |
1 degree |
Accuracy: |
1 degree up to 20kHz |
Trigger Generator Internal source 0.005Hz to 50kHz squarewave adjustable in 20us steps. 3 digit resolution. Available for external use from TRIG/SWEEP OUT socket |
AUXILIARY OUTPUTS |
AUX OUT CMOS/TTL levels with symmetry and frequency of main output and phase of Start-Stop phase setting. |
TRIG/SWEEP OUT Multi-function output depending upon mode. Except in Sweep mode, the output is that of the Trigger Generator at CMOS/TTL levels from 1kΩ. In Sweep mode the output is a 3-level waveform, changing from high (+4V) to low (0V) at the start of sweep, with narrow 1V pulses at each marker point. |
INPUTS |
Ext Trig |
Frequency Range: |
DC to 1MHz |
Signal Range: |
TTL (1.5V) threshold; maximum input ±10V |
Min. Pulse Width: |
50ns |
VCA In |
Frequency Range: |
DC - 100kHz |
Signal Range: |
2.5V for 100% level change at maximum output |
Input Impedance: |
Typically 6kΩ |
PHASE LOCKING |
Clock In/Out |
TTL/CMOS threshold levels; output impedance typically 50Ω as an output |
Sync Out |
TTL/CMOS logic levels from typically 50Ω |
The signals from these sockets are used to phase lock two or more generators. |
INTERFACES Full remote control facilities are available through the RS232 (standard) or optional GPIB interfaces. |
RS232: |
Variable Baud rate, 9600 Baud maximum. 9-pin D-connector. Fully compatible with Thurlby- Thandar ARC (Addressable RS232 Chain) system |
GPIB (IEEE-488): |
Conforming with IEEE488.1 and IEEE488.2 |
GENERAL |
Display: |
20 character x 4 row alphanumeric LCD |
Data Entry: |
Keyboard selection of mode, waveform etc.; value entry direct by numeric keys or by rotary control. |
Stored Settings: |
Up to 9 complete instrument set-ups may be stored in battery-backed memory. |
Size: |
3U (130mm) height; half-rack (212mm) width, 330mm long |
Weight: |
4.1kg (9lb) |
Power: |
100V, 110-120V or 220-240V ±10% 50/60Hz, adjustable internally. 40VA max. Installation Category II. |
Operating Range: |
+5°C to 40°C, 20-80% RH |
Storage Range: |
-20°C to +60°C |
Environmental: |
Indoor use at altitudes up to 2000m, Pollution Degree 2 |
Safety: |
Complies with EN6010-1 |
EMC: |
Complies with EN61326 |
Options: |
GPIB (IEEE-488) interface. 19 inch rack mounting kit. PC-based waveform creation and editing software - Waveform Manager Plus |